I'm using Joomla in combination with Nginx, and I'm currently trying to achieve some URL rewriting for a website that has several langages supported (italian, french, chinese, and deutch)

The urls have the country code after the domain name, like so :
http://www.example.com/fr/test/test.html
or
http://www.example.com/de/test/test.html

I'm looking to rewrite the urls so the country code is part of the subdomain :
so
http://www.example.com/fr/test/test.html
becomes
http://fr.example.com/test/test.html

Is there a way to achieve this with Nginx or should I look into a third party extension for Joomla (not my favorite choice).

Thanks !!